Valve for pneumatic tires.



No. 659,08I.

.uw e no -F/ KE fr 70 Patented Oct. 2, |900.

W J LLOYD VALVE FOR PNEUMATIC TIRES UNrTED STATES WALTER JOHN LLOYD, OF

PATENT Cruisin.

BIRMINGHAM, ENGLAND.

VALVE FOR PNE UN|ATIC TIRES.

SPECIFICATION formingpart of Letters Patent No. 659,081, dated October 2, 1900.

Application ined any 23, 1900.

To all w/zom, it may concern:

Be it. known that I, WALTER JOHN LLOYD, a subject of the Queen of Great Britain, re-

v siding at Sheepcote street, Birmingham, Engtion have for their object to simplify the con-A struction and arrangement of the parts ofthe said valves and to increase their efficiency.

I Will describe my invention in connection with a valve for the pneumatic tire of a VelOcipede-Wheel.

Figure l of the accompanying drawings represents in longitudinal vertical section, drawn to a large scale, and Fig. 2 in horizontal section, a valve constructed according to my invention. Figs. 3, 4, and 5 represent parts of the said valve detached. Fig. 6 represents a modification of or addition to the said valve hereinafter described.

Referring to Figs. l to 5, both inclusive, a is the externally-screwed barrel or body of the valve, the inner end or head a2 of which is attached to the air-tube of the tire and to the rim of the velocipede-wheel in the ordinary Way, and b is the stem or nozzle of the valve, (shown separately in Fig. 3,) which is secured to the outer end of the barrel or body d by an internally-screwed union or coupling ring c, as usual. I make the nozzle l) with a plain inner end b2, which passes into the barrel or body and terminates at or near the head a2 of the said barrel or body. Into the plain inner end b2 of the nozzle b I fit a smaller tube CZ, (shown separately in Fig. 4,) closed at its outer end-that is, the end which is nearest the nozzle b of theyvalve. The smaller tube d is of a larger external diameter at its open end d2 than at its other part, the larger end d2 being of a diameter proper to fit tightly the inner end of the plain part Serial No. 24,590. (No model.)

b2 of the nozzle-tube b b2, and the external diameter of the other part of the said tube d is such that there is formed when the tube d d2 is fitted in the part b2 of the nozzle-tube b b2 an annular chamber or air-space around the tube d. A fine hole e or a series of fine holes is made in the tube CZ at or near the larger end d2. After the fitting of the tube d into the nozzle-tube b b2 the joined or fitted inner ends of the tubes are hermeticallysealed, preferably by dipping them into liquid soft solder. In the tubed a vulcanized india-rubber Hap, lining, or tubef (shown separately in Fig. 5) is arranged, the said lining when it takes the form of a tube being of a size proper to-flt the tube d internally.

I Wish it to be understood that, although I have described and prefer to use india-rubber as the lining for the tube d, I do not limit myself to the use ofy an elastic material, as any flexible and non-porous material--such, for example, as gold-beaters skin or oilsliinmay be employed.

In the case of large valves the india-rubber liningf may be held in place by a plug or ta- .per pin g, as is illustrated in the arrangement shown in Fig. 6, the head or larger end of the taper pin being but slightly less than the iuternal diameter of the tube d. The plug or taper pin g, with the india-rubber liningf thereon, is passed into the tube d until the head of the plug or taper pin g has reached or nearly reached the closed end of the said tube d, as is represented in Fig. 6.

i The Outer end of the nozzle b is provided with a screw-cap h, as is usual in pneumatic valves.

The action of the valve is as follows: When an air-compressing pump or iniiator is attached to the screwed end of the nozzle b and Worked, the compressed air is forced into the annular air-space or chamber around the tube d and escapes therefrom into the tire by the fine hole e, the air under pressure lifting the india-rubber liningfout of contact with the tube d and passing between the said hole e and the inner end or mouth ofthe valve. The non-return of the air is insured by the internal pressure of the air in the tire, which preserves the lining fv in close contact with the tube d.

The application of my invention to valves IOO for air-inilated :irtieles other than tires differs in no @esenti-(tl respect from its applicau tion to the valve of :t pneu matie lire, as hereinhefore described and represented.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

An air-vulve for pneumatic tires and the like eonsisting` essentiellyof 2t burrel or body attached to the tire or other article to be inflnted :md a nozzle Secured to thel barrel or body by asorewefi union or coupling ri ng the Said nozzle having it plain inner end taking into the barrel or body iu which plain inner end a smaller tube lined internally with indiarubber or other exible and non-porous material and closed nt its outer end is so fitted VVAL'IER JOHN LLOYD.

Witnesses:

RICHARD SKERRETT, ARTHUR J oHN POWELL. 

